“Ten for $10″, read the sign at the East Bay Vivarium. So I bought 10 roaches. The guy tried to charge me $20. I pointed at the sign, “Roaches ten for $10″ with a smile on my face. He then went through the involved process of voiding out the previous sale. I wish I would have kept my mouth shut. The staff at the vivarium is odd, hostile with a sense of humor; elitist reptile lovers.